Heddle frame for a weaving loom



May 17, 1960 M. GRAF 2,936393 HEDDLE FRAME FOR A WEAVING LOOM Filed July1, 1957 I! IIIIIIIIIIIIII, I

2,936,793 HEDDLE FRAME run A WEAVING, LOOM e Martin Graf, Horgenberg,Zurich, Switzerland, assignor to Grob & Co., Aktiengesellschaft, Zurich,Switzerland Application July 1, 1957, Serial No. 669,138

Claims priority, application'switzerland July 2, 1956 6 Claims.(Cl.'139-92) 2,936,793 Patented May 17, 1960.

order to facilitate the insertion into the recess 8 of theheddle-carrier rail. The upper and lower supportingfaces 12a and 12b ofthe projection 11 are preferably slightly which are insertable. Moreoverthe carrier rails for the I heddle are attached at'certain intervals ona lateral projection of the frame bars. 1 I v The heddle framefor aweaving loom according to the invention is.characterised in that saidstayrod consists in a single partand has at both ends at least oneprojection which projections co-operatedirectly with correspondingrecesses of the said heddle frame for the purpose of arresting. the saidstay rod.

In the accompanying drawing embodiments of the invention arediagrammatically illustrated by way of example, in which: 1 Fig. 1 is anelevation of a heddle frame for a weaving oom,

Fig. 2 is a section on the line IIII of Fig. 1 through the upper framebar of the heddle frame on a larger scale,

Fig. 3 is a section on the line III-III of Fig. 1 through the lowerframe bar of the heddle frame, on a larger scale, viz, (a) with thestay'rod turned 90 while being inserted, (b) with the stay rod inserted,

Fig. 4 is a perspective view of the end of a stay rod,

Fig. .5 is a section through an upper frame bar of the heddle frame inthe range of an inserted stay rod of a modification,

Fig. 6 is a section of an upper frame bar of a doublerow heddle framefor a 'weaving loom with a stay rod inserted, and F Fig. 7 is across-section taken on line VII-VII in The weaving loom heddle frame 1in Fig. 1 has an upper frame bar 2 and a lower frame bar 3, which areconnected with one another by fixed or detachable lateral supports, orend rods, 4. The upper and the lower frame bars each have a part5directed towards the center of the frame on which part the heddlecarrier rail 6 is fixed in a known manner by rivets 7 or similar means.In other embodiments on the other hand the heddle carrier rails aremounted removably, the lateral parts 5 of the frame bars then beingreplaced by closure pieces.

In the heddle carrier rails 6 one or more recesses 8 corresponding tothe number of stay rods are provided for taking-in the projection at theend of the stay rod 9.

The end of the stay rod 9 is inserted into the interstice bounded by theprojection 5 of the frame bar 2 and by the heddle-carrier rail 6, asillustrated in Fig. 2. The end of the stay rod is unilaterally recessedat 10a and at 10b, whereby a projection 11 lying there between is formedwhich engages in turn into the recess 8 of the heddle-carrier rail 6(Fig. 4). The. elongated faces '11 of the projection 11 converge towardsthe outer edges in I and the hedddle-carrier rail 6 andbetweenthe-projefca i also inFig. 3b.-

inclined towards one another'in order that the stay rod 9 may be fittedfree from rattling into the recess 8 ofv the heddle carrier rail. Thetapered head 13 of the stay rod facilitates the insertion into theinterstice between the projection 5 of the frame bar and the heddlecarrier rail 6. 1

t the recessed points 1012 and 10b the end of the stay rod is preferablywider than the recess bounded by the part 5 of the frame bar and theheddle-carrier rail 6. The heddle-carrier tails are preferably made ofstrip steel and allow themselves to be deflected between the individualattachment points 7 provided with suitable spacing to a limited extentaway from the projections of the frame bar. The heddle-carrierrail 6resting on the recessed faces 10a and 10b forces; the stay rod 9 againstthe projection 5 of the frame bar, which results in a good fit free fromrattling of the stay rod, as illustrated In order to insert the stay rod9 the same is turned 90 on its vertical axis, and as indicated in Fig. 1at 9a, is positioned so far at an angle that the tapered heads, 13 onthe upper and lower end, respectively, can bein: sezted between-theprojection of the upper frame bar 2 tion "5 of the-lower frame bar 3 andthe heddle-carrier rail, respectively. Then the stay rod is brought intothe vertical position in such a manner that the upper and lowerprojection 11, respectively, comes to lie by'the side of the recess 8 inthe upper and lower heddle-carrier rail, respectively. In Fig. 3a thestay rod 9 is shown in this position. Thenthe stay rodis again turned 90in order that its projection 11 may engage into the recesses 8 of theheddle-carrier rails.

In this position the heddle-carrier rail 6 comes. to rest on the faces10a and 10b of the stay rods, the interstice between the portion 5 ofthe frame bar and the heddle-carrier rail 6 is forcibly enlarged and thestay rod is pressed firmly on the projection of the frame bar by theheddle carrier rail which is under stress, and is at the same time alsosecured against being unintentionally turned.

In Fig. 5 a modification is illustrated'in section. On a member bar 14conveniently formed plates, locking pieces rod 16 has two oppositelypositioned projections 17 and 18 which may be arranged at the same levelor offset with respect to one another. The projection 17 engages into arecess in the plate 15, and the opposite projection 18 engages into arecess of the heddle-carrier rail 19.

Likewise the stay rod 16 may engage with a projection 17 only into arecess of the plate 15 (Fig. 5) or of the portion 5 of the frame bar(Fig. 2) and be supported on the heddle-carrier bar 19 (Fig. 5) or 6(Fig. 2). Instead of engaging into a recess of the rail of the framebar, the stay rod or the projections thereof may engage into notchesthereof.

Moreover instead of the portion 5 of the framebar (Fig. 2) or of theplate 15 (Fig. 5) a second heddlecarrier rail 20 may be used indouble-row weaving loom heddle frames which may be arranged at the samelevel or may be offset. Such an arrangement is illustrated in Figs. 6and 7.

While I have herein described and illustrated in the accompanyingdrawings what may be considered typical and particularly usefulembodiments of mysaid invent-ion I wish it to be understood that I donot limit myself to the particular details anddimensions described andillustrated, for obvious modifications will occur to a person skilled inthe art.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a heddle frame, an upper substantially horizontal rier railsubstantially parallel with said lower frame bar in a laterally offsetand, vertically overlapping relation thereto, fasteningmeans securingsaid upper flexible heddle carrier rail to said upper frame bar. atspaced, intervals, fastening means securing said lower flexible heddlecarrier rail to said lower frame bar at spaced intervals, an

upright stay rod disposed intermediate said end rods and overlappingsaid upper and lower frame bars, and

lateral locking means on the overlapping portions. of, said stay rod,whereby said stay rod is releasably clamped between the overlappingportions of the respective frame bar and carrier rail through lateralyielding pressure from said flexible carrier rails. 7

2. The heddle frame as set forth in claim 1, in which said locking meanscomprises a lateral projection on the overlapping portion of said stayrod adaptedfor engage ment with a corresponding recess in the adjacentflexible carrier rail.

3. The heddle frame as set forth in claim 1, in which enemas saidlocking means comprises av first lateral projection on the overlappingportion of said stay rod adapted to engagement with a correspondingrecess in the overlapping portion of the adjacent carrier rail, and asecond lateral projection on the overlapping portion of said stay rodadapted for engagement with a corresponding recess in the overlappingportion of the adjacent frame bar.

4. The heddle frame as set forth in claim 3, in which said overlappingportion of the adjacent frame bar-comprises a second flexible heddlecarrier rail oflfset an equal distance from the vertical center line ofthe frame bar as the first mentioned carrier rail but in the oppositedirection. a a a 5. The heddle frame as set forth in claim 1, in whichsaid stay rod is substantially rectangular in cross-section along theportionof its length in engagement with said carrier rail, whereby itmay be inserted with said projection extending substantially parallelwith said carrier rail and locked in position by turning said stay rodthrough an angle of 90 about its longitudinal axis.

6,. The heddle frame as set. forth in claim 1, in which the lateraldimension ofvsaid intermediate stay rod is greater than the distancebetween the members. engag ing it on opposite sides when in locked.position. 4

References Cited in the file of this patent UNITED STATES PATENTSKaufmann Mar. 18, 1958

